More than a month has passed, and the employees of the original Mukden Arsenal have gradually adapted to the new factory equipment. Pen? Interesting? Pavilion wWw. ｂiquge。 infoThe whole plant began to gradually pass the run-in period. Production is starting to get on track. At this time, the atmosphere in the entire Northeast has gradually calmed down. After the Japanese army took control of Liaoning, because of the resolute resistance of Zhang Zuoxiang and Ma Zhanshan and others, they failed to occupy the entire three eastern provinces as in history, but only occupied a small part of Jilin.

However, Zhang Xueliang's order of non-resistance also left a deep rift in the hearts of the people in Northeast China, and part of the Northeast Army declared that it would break away from Zhang Xueliang's leadership and establish the Northeast Anti-Japanese Self-Defense Army on its own. But none of this has anything to do with Jiang Tao.

Jiang Tao has been thinking about the development of mechanized troops recently, but the development of mechanized troops is inseparable from fuel, and the most important thing is oil. However, the oil fields that Jiang Tao has an impression of in the northeast are the Songshui Crude Oil Field and the Daqing Oilfield, but the shallowest oil layer in the Daqing Oilfield is also 1,000 meters deep, and there is a certain degree of difficulty in exploitation. At present, I don't have enough industrial points to exchange for high-end drilling and mining equipment. Moreover, with the Japanese hunger and thirst for oil, once they know that Songyuan and Daqing have oil fields, they will definitely desperately increase troops to the northeast to grab them, and then they will make a wedding dress for the Japanese.

It seems that in a short period of time, there is no way to get natural oil, it seems that there can only be "coal-to-oil" technology first, although it is more wasteful for coal, but this is also the only means to obtain oil. Anyway, as long as you wait until the equipment comes up, you can exploit the oil field with peace of mind. After thinking about it, Jiang Tao threw the task of solving the problem of coalized oil to Chen Haisheng and asked him to organize people to conduct research, after all, Chen Haisheng has been the director of the factory for so many years, and his organizational ability must be much stronger than himself.

As for Jiang Tao himself, he also set a goal for himself, considering that the current Northeast Army is mainly engaged in defensive operations rather than taking the initiative to attack (some of the Northeast Army and Zhang Xueliang entered the pass, and some surrendered to the Japanese, and the Northeast Army now has not many troops left). Therefore, a support field artillery for positional defense has become Jiang Tao's research goal. The Type 92 infantry gun developed by Jiang Tao before, although it is easy to move, is really a little lacking in firepower, and can only be regarded as battalion-level fire support. Therefore, the caliber of this field gun must be large enough, at least 105 mm. Jiang Tao mainly considered the German LEFH18 105mm howitzer and the Soviet-made M-30 122mm howitzer.

LE. The FH18105 mm howitzer was arguably the most successful artillery piece of World War II. This gun is 105 mm le. The replacement of the FH16, the curved projectile trajectory can constantly carry out long-distance curved fire suppressive shooting, and can also flexibly adjust the artillery trajectory, which has the direct ballistic characteristics of anti-tank guns at close range, and can carry out effective direct shooting, which is deeply loved by German officers and soldiers. In September 1939, when World War II broke out, there were already 2,500 105mm LE. The FH18 howitzer was in service with the German army, and in the following period from 1940 to 1945, Germany produced a total of 20,000 105mm le. FH18 howitzer. 105 mm le. The FH18 howitzer has many variants and improved models, and it is also exported abroad, and during the Chinese War of Resistance Against Japanese Aggression, the government once introduced this kind of artillery. In the third Battle of Changsha, the artillery commander Wang Ruoqing commanded the troops equipped with this artillery to give the Japanese artillery a strong suppression, yes, the infantry can fight the Japanese army without braving artillery fire, and finally under the front blockade of the Chinese army, flank attack and pursuit, the Japanese army was defeated, and the Chinese army achieved a major victory. Since the Pearl Harbor incident, Japan's Southern Army has swept away all the Allied strongholds and fortresses in Asia within 100 days. China's resounding victory in the three Battle of Changsha was the only victory of the Allies in the Asian theater of operations during this period! Even the Germans directly installed this gun on the chassis of tank No. 2 in the later period, and made slight modifications to become a Wasp assault vehicle.

Another object of consideration is the M-30 122mm howitzer, known as the "Red God of War". This gun is similar to the German LE. Compared with FH18105 mm howitzer, the firepower is much stronger, and the weight of this gun is much higher than that of the 105mm howitzer at the price, this problem is tolerable for Jiang Tao, because this batch of artillery is mainly used for positional defense, and the distance to move is not too far, so the weight problem is insignificant.

After selecting the rough template, what Jiang Tao had to do was to transform the details of this cannon. First of all, in order to improve the movement ability of this gun, taking into account the lack of vehicles in the Northeast and the characteristics of mules and horses, Jiang Tao changed the original pneumatic rubber tire to a sponge-filled rubber tire, which is not easy to be hit by shrapnel and bullets and lose its effect, so its life is longer, but the traction speed is lower than that of pneumatic tires, but because the main transportation is still mule and horse-drawn transportation, the speed impact of this point is not obvious with car hauling, and it can be basically ignored.

Taking into account the environmental factors in the Northeast, the original special summer hoe has also been cancelled. In order to reduce recoil, extended wheels with an angle were added to offset some of the recoil.

In addition, considering that Japan may send planes to focus on these large-caliber heavy artillery, Jiang Tao wanted to design an anti-aircraft weapon. Because Japanese planes are notoriously weak in armor, the caliber of anti-aircraft weapons is not too large, and in addition, the current technology of the arsenal is weak and it is impossible to produce fixed-altitude or proximity fuses, so Jiang Tao had no choice but to win by quantity and study small-caliber anti-aircraft machine guns.

Although it is a small caliber, but this is also for anti-aircraft guns, you must know that in 1925, Bofors was commissioned by the Swedish Navy to develop a 20 mm (0.79 inches) caliber fully automatic shipborne anti-aircraft gun, but later the military found that the power of small-caliber anti-aircraft guns was limited, so it was required to re-develop larger caliber anti-aircraft guns. Therefore, Jiang Tao chose the 12.7 mm caliber commonly used by most anti-aircraft machine guns in later generations, which was enough for Japanese aircraft that cut corners.

This anti-aircraft machine gun uses the air-conducting principle of operation, using the high-pressure gas generated by the propellant in the bullet after firing through the guide hole in the barrel to push the structure of the bolt. Bolt offset locking, firing this locking method has high reliability, good rigidity, simple structure, easy production, and good serviceability. However, due to the force on one side of the bolt and the collision when opening and locking, it will have a certain impact on the accuracy of continuous shooting, but for Jiang Tao, his purpose is to win by quantity, and there are really not too many requirements for this accuracy

The mechanism is a hammer translational type, the hammer type has a large amount of power, large vibration, stable performance, and can provide greater kinetic energy for the anti-aircraft machine gun, and the bullet can make the bullet range longer than the firing needle mechanism, and the bullet feeding mechanism adopts two-way ammunition delivery and single-way ammunition supply. In consideration of logistical production, non-loose chains are used, which can be reused, are less costly and can quickly and manually load loose bullets into the chain to continue firing when the loaded chain is empty.

After thinking about the design concept, Jiang Tao went to Wen Jun, after all, there is no machine tool equipment now, the only thing to do is to draw, but the picture does not show the performance of the weapon, so the top priority is to find a way to get a batch of production equipment. And the original batch of equipment was well hidden, and now it's time to secretly go back and get them back.